Brain Training:How quick is your brain???

Question

Answer these as quick as u can:
1)15*5
2)9-4
3)71-5
4)51/17(divide)
5)3*3*3*3
6)5/2*2/2*2
7)0.5*0.5
8)$6-£2(currency rate shouldn't matter)
9)14632*0
10)0/1298
How many do you think you got right???

The currency Question is thrown in to confuse people and I think it is working...The answer should still be $6-£2!!!!!

Answer 1

1) 75
2) 5
3) 66
4) 3
5) 81
6) 5
7) 0.25
8) $6-£2
9) 0
10) 0

Answer 2

1)75
2) 5
3)66
4) 3
5) 81
6) 5
7) 0.25
8) $4
9) 0
10) infinity.
it took more time for me to type. eighth one is obviously wrong.

Answer 3

1)75
2)5
3)66
4)3
5)71
6)5
7)0.25
8)about £3
9)0
10)0

Answer 4

1. 75
2. 5
3. 66
4. 3
5. 81
6. 5
7. 0.25
8. ...
9. 0
10. can't be count.

Answer 5

75
5
66
3
27
5
0.25
???
0
0

I think I got them all right (except the currency one). It took less than a minute.

Can you explain the currency question - it makes no sense?


Edit: one wrong. 3^4 = 81, not 27. Blast :(

Answer 6

1) . . .75
2) . . .5
3) . . .66
4) . . .3
5) . . .81
6) . . .5
7) . . .0.25
8) . . .4
9) . . .0
10) . . .0

Answer 7

All of them.